<?php

/**
 * UserIdentity represents the data needed to identity a user.
 * It contains the authentication method that checks if the provided
 * data can identity the user.
 */
class UserIdentity extends CUserIdentity
{
	/**
	 * Authenticates a user.
	 * The example implementation makes sure if the username and password
	 * are both 'demo'.
	 * In practical applications, this should be changed to authenticate
	 * against some persistent user identity storage (e.g. database).
	 * @return boolean whether authentication succeeds.
	 */
	 private $_id;
 public function authenticate()
 {
 $username=strtolower($this->username);
 $user=Usuario::model()->find('LOWER(username)=?',array($username));
 if($user===null)
 $this->errorCode=self::ERROR_USERNAME_INVALID;
 else if(!$user->validatePassword($this->password))
 $this->errorCode=self::ERROR_PASSWORD_INVALID;
 else
 {
 $this->_id=$user->id;
 $this->username=$user->username;
 $this->errorCode=self::ERROR_NONE;
 }
 return $this->errorCode==self::ERROR_NONE;
 }
 public function getId()
 {
 return $this->_id;
 }
}